Accession Number : ADP204410

Title :   Preliminary Results of Discrimination Studies in Western China,

Corporate Author : LOS ALAMOS NATIONAL LAB NM

Personal Author(s) : Hartse, Hans E. ; Taylor, Steven R. ; Randall, George E.

PDF Url : ADP204410

Report Date : 14 AUG 1995

Pagination or Media Count : 11

Abstract : As a part of the Comprehensive Test Ban Treaty Research and Development Program, we have started to evaluate regional seismic discriminants for western China. Our primary objective is to appraise the current seismic discrimination capability for central and south central Asia. We have been testing several discriminants using short-period and broadband waveforms recorded at the Chinese Digital Seismic Network station WMQ. Our preliminary results cover four classes of discriminants: (1) short-period ratios, (2) short-period spectral ratios, (3) long-period ratios, and (4) long-period to short-period ratios. For each discriminant tested, we have measured waveforms from over 140 earthquakes to find ratio-distance relationships, and we have used these relationships to correct our final ratio-m sub b discrimination plots for distance effects.

Descriptors :   *SEISMIC DETECTION, *ARMS CONTROL, *NUCLEAR EXPLOSION DETECTION, *SEISMIC DISCRIMINATION, *EARTHQUAKES, SYMPOSIA, WAVEFORMS, NUCLEAR EXPLOSION TESTING, BROADBAND, SEISMIC WAVES, TREATIES, EPICENTERS, SEISMIC VELOCITY, SEISMOLOGY, SOUTHEAST ASIA, CHINA.

Subject Categories : Government and Political Science
      Seismology
      Seismic Detection and Detectors
      Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE